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Shutemov" To: "Matthew Wilcox (Oracle)" Cc: akpm@linuxfoundation.org, linux-mm@kvack.org, Heiko Carstens , Rafael Aquini , Vlastimil Babka , Yu Zhao , Vladimir Davydov , kirill.shutemov@linux.intel.com Subject: Re: [PATCH] mm: Mark idle page tracking as BROKEN Message-ID: <20210614110855.k3j6dpkxn4earjyf@box.shutemov.name> References: <20210612000714.775825-1-willy@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210612000714.775825-1-willy@infradead.org> Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=shutemov-name.20150623.gappssmtp.com header.s=20150623 header.b=1pLLdNts; dmarc=none; spf=none (imf30.hostedemail.com: domain of kirill@shutemov.name has no SPF policy when checking 209.85.167.44) smtp.mailfrom=kirill@shutemov.name X-Rspamd-Server: rspam02 X-Stat-Signature: w3uhwzsuocxdr1amctrd5cst8r5kia1k X-Rspamd-Queue-Id: 81764E000254 X-HE-Tag: 1623668914-905595 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Sat, Jun 12, 2021 at 01:07:14AM +0100, Matthew Wilcox (Oracle) wrote: > In discussion with other MM developers around how idle page tracking > should be fixed for transparent huge pages, several expressed the opinion > that it should be removed as it is inefficient at accomplishing the > job that it is supposed to, and we have better mechanisms (eg uffd) for > accomplishing the same goals these days. > > Mark the feature as BROKEN for now and we can remove it entirely in a > few months if nobody complains. It is not enabled by Android, ChromeOS, > Debian, Fedora or SUSE. Red Hat enabled it with RHEL-8.1 and UEK followed > suit, but I have been unable to find why RHEL enabled it. > > Signed-off-by: Matthew Wilcox (Oracle) Acked-by: Kirill A. Shutemov -- Kirill A. Shutemov